20 Pack Copper Spring Lock Washers M8 Split Lock Washers For Screws Bolts Nuts Inner 8.1 To 8.7 Mm Outer 12.1 To 13.1 Mm Thick 2 To 2.2 Mm With Pickling Finish No Slip Built Tough For Auto DIY Projects

20-Pack Copper Spring Lock Washers for M8 Bolts
✔️ Inner 8.1-8.7mm, Outer 12.1-13.1mm, Thickness 2-2.2mm

These copper spring lock washers come in a 20-pack and are designed for M8 fasteners. With a pickling finish, they resist rust and corrosion, making them ideal for auto DIY, metalwork, and outdoor projects.

✅ Inner Dia: 8.1-8.7mm
✅ Outer Dia: 12.1-13.1mm
✅ Thickness: 2-2.2mm
✅ Material: Copper with pickling finish
✅ Pack: 20 pcs
✅ Function: Prevent loosening under vibration

💡 What is a copper spring lock washer used for in mechanical assemblies?

This handy component helps keep fasteners tight in machines subject to vibration and movement. - stabilizes screws and bolts in metal frames - handy for automotive, DIY projects, and deck repairs - improves resistance to loosening under vibration - works with matching screw sizes for a secure fit ✝️